File:Edouard Manet 051.jpg|thumb|upright|Édouard Manet:
''Portrait of Théodore Duret''
'''Théodore Duret''' (20 January 1838, Saintes, Charente-Maritime|Saintes
– 16 January 1927, Paris
) was a French people|French journalist
and art criticism|art critic
. He was one of the first advocates of impressionism
. One of his best known works is ''Critique d'Avant Garde (Paris, 1885)''
[[https://openlibrary.org/books/OL22878157M/Critique_d'avant-garde Critique d'Avant Garde at Archive.org]]
which was written in support of the Impressionist movement. He also served as collecting advisor and buying agent for American art collector Louisine Havemeyer
[[http://libmma.contentdm.oclc.org/cdm/ref/collection/p15324coll13/id/11945 Finding aid for ''The Havemeyer Family Papers relating to Art Collecting''.]]